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Finding the Fourth Proportional to 70,549.71, 97,359.75 and 38,721.57

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Solution

The fourth proportional to 70,549.71, 97,359.75 and 38,721.57 is: 53,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,549.71 : 97,359.75 = 38,721.57 : x
  2. Step 2: Convert to fraction form
    70,549.71/97,359.75 = 38,721.57/x
  3. Step 3: Cross multiply
    70,549.71x = 97,359.75 × 38,721.57
  4. Step 4: Simplify right side
    70,549.71x = 3,769,922,374.81
  5. Step 5: Solve for x
    x = 3,769,922,374.81/70,549.71
  6. Step 6: Final answer
    x = 53,436.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.